Sickle-grinder.



No. 781,447. j PATENTED JAN. 31, 1905. J. W. MYERS.

SIGKLE GRINDER.

APPLICATION FILED APR. 4. 1904.

3 SHEETS-$11331 l.

Patented January 31, 1905.

PATENT OFFICE.

JAMES w, MYERS, or. CHICAGO, ILLINOIS.

SlCKLE-GR'INDER.

SPECIFICATION forming part of Iietters Patent No. 781,447, dated January 31, 1905. Application filed April 4;, I904. seem No. 201,617.

. useful improvements "in sickle-grinders; and I its object is to produce a device of this class which shall have certain advantages which will appear more'fully and at large in the course of this specification.

To this end my invention consistsin certain novel features of construction, which are clearly illustrated in the accompanying drawings and describedin this specification.

In-the aforesaid drawings, Figure 1 is a front elevation of a vise, showing my im, proved sickle-grinder in place. Fig. 2 is atop plan of the same. Fig. 3 is a verticalsection in the line 3 3 of Fig. 2. Fig. 4 is a perspective view of thesickle-clamping jaws. Fig. 5 is aperspective view of thelink to-which the clamping-jaws are pivoted. Fig. 6 is a ,view illustrating the manner in which, the. grinder can be attached to other supporting devicesas, for instance, a mower-wheel. Fig. 7 isan elevation of the sickle-grinder proper re moved from the vise; and Fig. 8 is a section in the line 8 8 of Fig. 7 looking downward, the clamping-jaw and the link supporting the same occupying a position shown in dotted lines in Fig. 7.

Referring to the drawings, A indicates a vise which is used to support my improved device. The stationary jaw of thisjvise isindicated by A, the movable jaw by A A hand-wheel a is provided for drawing the two jaws together, and the movable jaw A is provided with a train of gears rd, driven by a crank 0 to rotate a shaft A in the upper end of said movable-jaw. The inner end of this shaft A has ahead a (see Fig. 3,) having a non-circular central socket for engagement with other devices. B indicates'the supporting-frame of my improved sickle-grinder. This frame has a horizontal Web 5, having downwardlyprojecting flanges b b and upwardly-extending.

, projecting flanges b space through which the chain can pass.

- other end being supported by the shaft and this construction is particularly desirable, because itpermits a certain limited movement the parts are not perfectly adjusted.

portions 72 5 The downwardlyextending flange Z2 has suitable lugs b at its edges, and the entire piece B is adapted to be supported by the jaws of the vise A, the two jaws engaging with the downwardly-projecting flanges b and with' the lugsb on the downwardly- Vertical flanges 6 eX- tend-along one of the edges of the flanges b b to assist in positioning the frame upon the jaws of the vise. All the parts of this supporting-frame B are preferably cast integral and suitable strengthening-ribs are provided, as illustrated. A shaft 0 is journaled in the upper end of the upwardly-extending mem This shaft bears an emery-Wheel C between the supporting members 12 b and a sprocket C outside the supporting member The downwardly-projecting flange b has at its lower end a socket t, inwhich is journaled one end of a shaft D, said shaft carry ing a sprocket D, having anon-circular spin dle D adapted to engage with the non-circular socket in the head a of the shaft A The sprockets C and D are connected by a suitable chain d.

ing flange b on the frame B, and the lugs are providedfor the purpose of affording this It will be evident that when. the-train of gears is set in motion the emery-wheel C will be rotated ata high speed. The shaft D is provided with "a bearing at one end only, the

of the end of the shaft, and consequently lets it work. freely and without binding evenif To the upwardly-extendi'ng supports 6 I) is pivoted a link E, Fig. 5. Said link consists of two arms 0, having heads 0' pivoted to the supporting members 72 I)" and provided with stops e engaging with similar stops 5 on the supports 5 If to limit the upward movement of the link. The arms 0 are connected by an integral cross-bar e and have at theirfre'e ends notches e. I

Findicates the lower clamping-jaw, which The chain dipasses through the space inclosed by the lugs 6 the movable jaw of the vise, and the downwardly-pro ectholds the sickle to be operated on. This aw has a flat web f, integral laterally-projecting pins f", sickle-engaging portions f and a handle f". The pins 7 are pivoted in the notches a in the link E, and it will be seen that the faces of the sickle-engaging portions f lie close beside the pins, so that the pins can only be slipped into the notches when the link E and the jaw F are swung substantially into line, so that the handle f approaches the lower side of a cross-bar e". The parts can only reach this position when the link is swung up nearly to its upper limit ofmovement, for when the link is swung downas shown, for instance, in dotted lines in Fig. 7 the handle will not ordinarily swing up to the cross-bar e being arrested by the frame B, as illustrated. This construction is such, therefore, that the jaw F can be swung up adjacent to the emery-wheel without disengaging the parts and can be dropped to let the link swing down to its lower limit of movement. When the link swings down in this way, the rear ends of the sickle-engaging portions 5 engage with the ends of the arms of the links, preventing the disengagement of the parts. In this way a simple, cheap, and very effective self-locking pivot is provided. The web f is formed with a shoulder f", against which the sickle H rests, and lugs f, adjacent to the shoulder f, forming therewith a guide for the sickle.

To the jaw F at g is pivoted a jaw G, which has two sickle-engaging portions g, opposed to the web f of the jaw F. The jaw G has a handle g adapted to be grasped with the handle f to draw the engaging ends of the jaws together. The jaw G is also provided at its engaging end with adjusting-screws 9, whereby sickles of various constructions may be clamped in place.

The operation of this device will be very readily apparent. A sickle H is placed in position between the jaws and the jaws are brought together upon it by drawing the handles together. The emery-wheel is then rotated, as heretofore explained, and the sickle is swung up into contact therewith by raising the handles f g and moving the sickle back against the emery-wheel.

It is frequently desirable to support the to level the device, and the emery-wheel can then be driven by the handle attached directly to its shaft. It is of course obvious that the frame can be supported in the jaws of a vise of the ordinary construction or upon a bench by a clamp or other device.

I realize that considerable variation is possible in the details of this construction without departing from the spirit of my invention, and I therefore do not intend to limit myself to the specilic form herein shown and described.

I claim as new and desire/to secure by Letters Patent 1. The combination with a vise having opposing jaws, and a rotatable shaft mounted in one of said jaws, of a sickle-grinder having a supporting-frame constructed and arranged to be grasped by said jaws, a grinding-wheel mounted in the frame, and means for connecting the grindingwheel with the rotatable shaft of the vise.

2. The combination with a vise having opposing jaws, and a rotatable shaft mounted in one of said jaws, of a sickle-grinder having a sup1 )ortingframeconstructed and arranged to be grasped by said jaws, a grinding-wheel mounted in the frame, means for connecting the grindingwheel with the rotatable shaft of the vise, and means for supporting a sickle and holding the same in contact with the grindingwheel.

3. The combination with a vise having opposing jaws, and a rotatable shaft mounted in one of said jaws, of a suitable supportingframe constructed and arranged to be grasped by said jaws, a grinding-wheel journaled in the frame, a shaft journaled at one end in said supporting-frame and having the other end constructed and arranged to be .detachabl y secured to the end of the shaft of the vise, and means of connection between the shaft journalcd in the frame and the grinding-wheel.

4. The combination with a vise having opposing jaws, and having a rotatable shaft journaled in one of said jaws, of a supportingframe having downwardly-projccting flanges, lugs upon one of said flanges, the lugs and the other flanges being constructed and arranged to be grasped by the jaws, a grimling-wheel journaled in the supporting-frame, a sprocket secured to the shaft of the grinding-wheel, a second sprocket rotated by the shaft in the vise, and a chain passing over said sprockets and between the lugs on the down wardly-projecting flange of the frame.

5. The combination with a suitable supporting-frame, of a grinding-wheel journaled in the frame, means for driving said wheel, a link pivoted to the frame and arranged to swing in a vertical plane, laterally-open notches in the end of said link, a pair of sickle-supporting jaws, pins in the end of one of said jaws, arranged to enter the notches on the link when the two are swung into line, engagement devices on the jaw, cooperating with the link to prevent the disengagement of the pins from the notches when the link and jaw are not in line, and means for limiting the relative rotation of the parts to prevent the link and jaw from accidentally falling into line.

to the supportingframe, one clamping jaw pivoted to the link, a second jaw pivoted to said first jaw and cooperating therewith to grasp asickle, handles-upon each of said jaws,

, adapted to draw their operative ends together,

and vmeans for adjusting the opening betweenthe operative ends of said jaws. I

8. The combination-with a supportingframe, a grinding-wheel journaled therein and means for driving the same, of a link pivoted to thesuppo'rting-frame, one clampingjaw pivoted to the link, a second jaw pivoted to said first jaw and cooperating therewith to grasp a sickle, handles upon each of said jaws, adapted to draw the operative ends together, and suitable adjusting-screws at the operative end of one of said jaws for adjusting the size of the jaw-opening. Y I

In witness whereof I have signed the above application for Letters Patent, at Chicago, in the county ofCook and State of Illinois, thi

21st day of March, A. D. 190% JAMES W. MYERS.

' Witnesses:

'RUSSELL -VVILEs, CHAS. O. SHERVEY. 

